Improvement in theeshing-machines



@nitrittstrs betritt @ffice FELIX A. FINN, or SALT POINT, Naw-YORK.

Letters Patent No. 74,330, dated February 11,V 1868; antedated Ferary 6,1868.

IMPROVEMENT IN THRssIIINe-IIAGIIINBSJ TO ALL WHM IT MAY CONCERN:

Be it known that I, FELIX A. FINN, of Salt Point, Dutchess county, NewYork, have iuventeda new and improved Grain-Threshing Machine; and I lohereby declare that the following is a. full, clear, and exactdescrptlouthereoi', which willenable othersV skilled in the-art tomalteand use the saine, reference being had f tothe accompanyingdrawings, forming part of this speciiication; l The object of thisinvention is to obtain a machine by which grain may be Vthreshed bypower, and without bruising or breaking the straw.

The invention consists in the .employment or use of one or more rotatingcylinders, provided with jointed bars or flails, and placed within abox, having an inclined floor or bottom, whereby the straw may be fedalong underneath the beaters or ails, by the action of the latter, andthe g1-ain* thereby threshed out of the heads.

The invention also consists in' a novel manner of"operatiug or' givingthe necessary shake-motion to a screenV which separates the grain fromthe straw, as hereinafter fully shown and described. In the accompanyingsheet of drawin, gsv

Figure' 1 is a side sectional view of my invention, taken in the line a:22,' fig.A 2; Figure 2, a plan 'or'top view of my invention. Similarletters of reference indicate'corresponding parts. A represents 'aframing, constructed in any proper manner, and having an inclinedplatform, a, within it, which serves as the bottom of a box, in whichthe!threshingcylindersB B are placed, the journals of said cylindershaving their bearings in the sides b b of the box, which sides arepermanently secured tothe framing A.. i .The top c and ends d d of thisbox are connected together, made 'separately from the framing, Vand con-Vnected thereto in any proper manner, the ends d d being suicientlyshort to `admit of an opening,` e, at the upper er feed-end of the box,to allow the grain being fed to the threshing-cylinders, and valso admitof an -0pening,f, at the lower end of the box for the discharge of thestraw, (see iig. 1.) The threshing-cylinders B B;

are placed horizontally, and are each provided with radial projectionsg, which are tted in` the cylinders in circumferential rows. To theouter end of leach projection g there is connected by a'joint, 7i, a'beater or flail, C( These joints are so formed that the ials are notallowed to extend down much below a radial line withthe projections g,the fullest descent being shownin red in fig. 1, at'gx, but theyare-allowed to, inove upward or in a. reverse direction indenitely, nocheck to their movementin that direction `being' required. The als C, ofone cylinder B, are in line'with` the spaces between the fiails vot` theother cylinder, :1s-shown clearly in. iig. 2, and the face sides of the:dails are curved o'r rounded in such u manner that they will,'as thecylinders B B are rotated, strike the grain with -the b est possibleeffect, .and with.V a surface of considerable area, or with as great'a.portion of their length as practicable, as will be fully understood byreferring'to iig.4 1. u

The two cylinders B B are connected at one end by a. belt, i, or bygearing, andthe cylinders are rotated by a belt which passes lover apulley, y', at one end of one of the cylinders B. The'cylinders rotateinthe direction indicated bythe arrows 1. rihe lails are thrown downupon the grain b y the centrifugal force generated by the rotation ofthe cylinders,'and have a combined beating arid drawingaction, theformer threshing thre'grain from the heads ofthe straw, and the latteractionfeeding the straw down the inclined bottom a. The feed orv passageof the straw down the inclined bottom a, may be regulzited, as desired,byrraising or lowering the framA ing A at the lower ordepressed end ofthe bottom a,-and the legs cf the framing at this end may be made so asto be capable of being lengthened or shortened for .this purpose.

D represents a screen, placed underneath the lower part of the bottom a,and suspended at ea'eh sideby a hanger, E, from the sides b of thethreshing-box, said hangers admitting of the screen having alongitudinal shake-movement, and this movement is given it by a rod, F,connected to a cranks'pullcy, G, onone end of one of the cylinders B, asshownin iig. 2. The threshedgrain passes throughthe screen D, the strawbeing discharged from its end.

By this invention grain may b e threshed without injuring the struwrinVthe .least, and the work may be performed rapidly and with but a.moderate power. V

Having thus described my invention, what I clnim as new, and desire tosecure by Letters Patent, is- 1. The inclined bottom a, in combinationwith one or more cylinders, B, provided with jointed ilails, all

- arranged substantially as and for the purpose specified.

` 2. 'The screen D, operated by the crank-pulley G and connecting-rod F,from one ofthe threshing-cylinders, substantially as and for tliepurposeset forth.

The above specification of my invention signed by me, this 27th day ofJune, 1867.

' FELIX A.' FINN.

Witnesses:

WM. F. MoNAMARA, ALEX. F. ROBERTS.

